Home / 136,540.08-188,423.42-76,109.63

Finding the Fourth Proportional to 136,540.08, 188,423.42 and 76,109.63

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Solution

The fourth proportional to 136,540.08, 188,423.42 and 76,109.63 is: 105,030.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,540.08 : 188,423.42 = 76,109.63 : x
  2. Step 2: Convert to fraction form
    136,540.08/188,423.42 = 76,109.63/x
  3. Step 3: Cross multiply
    136,540.08x = 188,423.42 × 76,109.63
  4. Step 4: Simplify right side
    136,540.08x = 14,340,835,456.87
  5. Step 5: Solve for x
    x = 14,340,835,456.87/136,540.08
  6. Step 6: Final answer
    x = 105,030.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.